Seismotectonic maps in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky - Digital Spatial Database: Paleoliquefaction surveys in 1995 in Illinois

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Frequently anticipated questions:

What does this data set describe?

Title:
Seismotectonic maps in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky - Digital Spatial Database: Paleoliquefaction surveys in 1995 in Illinois
Abstract:
Over several summer field seasons from 1990 through 1994, several workers searched ditches and river banks for evidence of prehistoric earthquake liquefaction. They found numerous banks with shaking-induced sandblows and the dikes that fed them. "liq94surv" shows where they searched. This database shows where additional areas were searched in the summer of 1995.
  1. How might this data set be cited?
    Rhea, Susan, 1997, Seismotectonic maps in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky - Digital Spatial Database: Paleoliquefaction surveys in 1995 in Illinois: U.S. Geological Survey Open-File Report 97-0681, U.S. Geological Survey, Denver.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -91
    East_Bounding_Coordinate: -87.07920837
    North_Bounding_Coordinate: 42
    South_Bounding_Coordinate: 37
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 1995
    Ending_Date: 1995
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: map
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a Point data set. It contains the following vector data types (SDTS terminology):
      • Point (6)
      • String (12)
      • GT-polygon composed of chains (7)
    2. What coordinate system is used to represent geographic features?
      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitude and longitude values are specified in Decimal Degrees. The horizontal datum used is Unknown.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.4.
      The flattening of the ellipsoid used is 1/294.98.
  7. How does the data set describe geographic features?
    LIQ95SURV.PAT
    areas searched for liquefaction evidence (Source: Rhea)
    INSIDE
    area inside BUFFERed river shoreline where searched for liquefaction
    ValueDefinition
    0outside
    100inside

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Rhea, Susan
  2. Who also contributed to the data set?
    James Oliver
  3. To whom should users address questions about the data?
    Susan Rhea
    US Geological Survey
    Geophysicist
    MS966, Box 25046, Federal Center
    Denver, CO
    USA

    303-273-8639 (voice)
    303-273-8600 (FAX)
    rhea@usgs.gov
    Contact_Instructions: email is the best way to make contact

Why was the data set created?

The data was generated to help in understanding the seismotectonic hazards in the vicinity of the lower Wabash Valley. This data complements similar data collected in the vicinity of New Madrid, MO US Geological Survey Open-File Report 95-0574, available at http://pubs.usgs.gov/of/1995/0574/

How was the data set created?

  1. From what previous works were the data drawn?
    (source 1 of 4)
    James Oliver, Martia Tuttle, 1996, written communication.

    (source 2 of 4)
    Tuttle, M.P., Lafferty, R.H., Cande, R.F., Chester, J.S., Haynes, M., 1996, Evidence of earthquake-induced liquefaction north of the New Madrid seismic zone, central United States: Seismological Society of America.

    Other_Citation_Details: abs, p.58
    (source 3 of 4)
    Hajic, E.R., Obermeier, S.F., Wiant, M.D., and Oliver, J.S., 1996, Timing of prehistoric earthquake liquefaction in southeastern and central Illinois: Geological Society of America Abstracts with Programs vol 28, no 6, Geol. Soc. America.

    Other_Citation_Details: pg 42
    (source 4 of 4)
    Obermeier, Garniewicz, R.C., and Munson, P.J., 1996, Seismically induced paleoliquefaction features in southern half of Illinois [abs]: Seismological Research Letters vol 67, no 2, Seismological Society of America.

    Other_Citation_Details: p. 49
    Type_of_Source_Media: electronic
    Source_Scale_Denominator: 250000
  2. How were the data generated, processed, and modified?
    Date: 29-May-1996 (process 1 of 2)
    arcinfo coverage of selected rivers from DLG hydrography ftp'd to Rhea from Oliver. Arcs were BUFFERed to create areas out of line segments so that reaches could be color shaded on final map.
    Date: 06-May-1998 (process 2 of 2)
    Creation of original metadata record Person who carried out this activity:
    Susan Rhea
    US Geological Survey
    Geophysicist
    MS966, Box 25046, Federal Center
    Denver, CO
    USA

    303-273-8639 (voice)
    303-273-8600 (FAX)
    rhea@usgs.gov
    Contact_Instructions: email is the best way to make contact
  3. What similar or related data should the user be aware of?
    Rhea, Susan, and Wheeler, R.L., 1996, Map showing seismicity in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky: U.S. Geological Survey Miscellaneous Investigations Series Map I-2583-A, U.S. Geological Survey, Denver.

    Other_Citation_Details: pamphlet accompanies map

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?
    The attribute accuracy is described, where present, with each attribute defined in the Entity and Attribute Section.
  2. How accurate are the geographic locations?
    as reported by sources
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    all data received from cooperator are included
  5. How consistent are the relationships among the observations, including topology?
    Point features present.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
Access_Constraints: none
Use_Constraints: none
  1. Who distributes the data set? (Distributor 1 of 1)
    Susan Rhea
    US Geological Survey
    Geophysicist
    USGS Mail Stop 966
    Box 25046, Federal Center
    Denver, CO
    USA

    303-273-8639 (voice)
    303-273-8600 (FAX)
    rhea@usgs.gov
    Contact_Instructions: Email is the best way to make contact.
  2. What's the catalog number I need to order this data set? USGS Open-File Report 97-0681
  3. What legal disclaimers am I supposed to read?
    This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards and stratigraphic nomenclature. Any use of trade names is for descriptive purposes only and does not imply endorsement by the USGS.
  4. How can I download or order the data?
  5. What hardware or software do I need in order to use the data set?
    ARC/INFO version 7.0.3 or later or ArcView 3.0 or later

Who wrote the metadata?

Dates:
Last modified: 10-Jun-2016
Metadata author:
Peter N Schweitzer
USGS Midwest Area
Collection manager, USGS Geoscience Data Clearinghouse, http://geo-nsdi.er.usgs.gov/
Mail Stop 954
12201 Sunrise Valley Dr
Reston, VA
USA

703-648-6533 (voice)
703-648-6252 (FAX)
pschweitzer@usgs.gov
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
This page is <https://geo-nsdi.er.usgs.gov/metadata/open-file/97-681/liq95surv.faq.html>
Generated by mp version 2.9.48 on Tue Jul 03 20:06:59 2018